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Dennis_Churaev [7]
3 years ago
9

A scientist wrote down the steps to perform a chemical experiment, but they are out of order. Help the scientist by rearranging

his steps in the correct order. Measure out 0.3 grams each of the solids, lead nitrate and potassium iodide. Watch mixture change from clear to a yellow solid and record observations. 1 Measure 100 ml distilled water into each of two beakers. 1 Write a science report detailing results and conclusions. Dissolve each solid in a separate beaker of water. Pour both solutions into one container and slowly stir. Create a presentation and share findings with peers. Predict what happens when lead nitrate reacts with potassium iodide.​

Chemistry
1 answer:
ohaa [14]3 years ago
8 0

Answer:

predict what's going to happen

measure 100 million distilled water into two beakers

measure out 0.3 grams each

dissolve each solid in a separate beakers of water

pour both solutions into one containers

watch mixture change

write a science report

make a presentation and share with peers

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How many grams of NaCl are in 3.5 mol of NaCl? Also, how many moles of NaCl are in 150 g of NaCl?​
alexandr402 [8]

Answer:

204.5505 grams

2.5666 moles

Explanation:

For the first question, multiply 3.5 (# of moles) by 58.443 (g/mol for NaCl).

58.443 * 3.5

<em>I'll distribute 3.5 into 58.443.</em>

(3.5 * 50) + (3.5 * 8) + (3.5 * 0.4) + (3.5 * 0.04) + (3.5 * 0.003)

175 + 28 + 1.4 + 0.14 + 0.0105

203 + 1.4 + 0.14 + 0.0105

204.4 + 0.14 + 0.0105

204.54 + 0.0105

204.5505 grams

There are 204.5505 grams in 3.5 moles of NaCl.

For the second question, divide 150 (# of grams) by 58.443 (g/mol for NaCl). I'll convert both into fractions.

150/1 * 1000/58443

150000/58443

2.56660336 moles

2.5666 moles (rounded to 4 places to keep consistency with the first answer) are in 150 grams of NaCl.

6 0
3 years ago
What is the mass of 3.01x1023 atoms of iron(atomic mass of fe=56)
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Answer:

N = n× l

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3.01 × 10^ 23 = n * 6.023 × 10^23

n = 3.01 × 10^23/6.023 × 10^23

n= 0.5moles

Molar mass = mass/ number of moles

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Hope this helps.

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What are some insulators and conductors of electricity? Name 2 of each
hammer [34]

Answer:

insulator:wood,rubber

conductor:aluminium,copper

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